Hey peathenster, your red spotteds are starting to color up nicely. If you are not feeding frozen krill you should start. It really brings out the red color. Your H. efasciatus is also defiantely as advertised. I have three young ones from Rapps that look just like that with the light red lines. The have really been fast growers and have doubled in size in less then a month.
As for the red spotted being hybrids or line bread. The original breeders said that they were line bred when they came out. If you go to cichlid forum profiles they even have the red spotted listed under the gold severum specifically stated as line bred. They are also not sterile. I have personaly seen a breeding pair with fry in a display tank at a fish store. They cost more much like an EBJD because they are weaker, don't grow as fast as regular severums and took for a long time breeding to get to that coloration. They are also notoriously bad parents that are hard to breed. I guess some could be sterile do to inbreeding, but I know first hand that all are not.